[ianbicking]

> How can I link to a youtube video and add my own commentary links? I can't (I think) without creating my own video that explicitly copies the original (rather than consuming it).

You can write a blog post and embed the video with timing information.

Of course embedding is largely the same as transclusion, among the features touched upon by open hypermedia.

While you don't get full expressivity without a blog or something that allows full HTML, you can get most of this in other mediums (e.g., Twitter) where the video is embedded automatically given a link. In theory OEmbed (https://oembed.com/) is a standard for something like transclusion, though it's not very widely supported.

Constructing a link to a point in time in a video is a non-standard operation (you just have to know the YouTube interface). Similarly there aren't great patterns for finding a link to a position in a web page. But the pieces are all kind of there, though missing the controls and patterns to bring them together. Which is a failing of browsers, though that points in the opposite direction of the claim in the title of this piece (i.e., it implies to me that we need browsers to go deeper, not increase the breadth of linked applications).